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CPM Section 2.1 Part II Normal Domains

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Once again, the domain of a relation such as would be _____________________________________, while the range would be ___________________________________. Later in the year we will discuss imaginary numbers but right now we are limited to the set of real numbers (__). Thus, when determining the normal domain of a relation, there are two things that must be avoided. 1. _____________________________________________________________ 2. _____________________________________________________________ the #’s that you put in for x the #’s we get for y Domain (x’s) (input) Range (y’s) (output) We can’t divide by zero (set denom=zero) We can’t take the square root of a neg # ***If there is no variable in the denom or in a radical, the domain is i

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Homework: Page 68-69 #’s 14-34 When the radical is in the denominator, set the radicand greater than zero cause the denominator can never equal zero

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Radical Basics We will work with square roots, thus, you do not need to write the index. The index for square roots is 2.

Radical Basics We will work with square roots, thus, you do not need to write the index. The index for square roots is 2.

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